Term
|
Definition
| humans take advantage of genetic variation and breed organisms such as horses, dogs, and corn to have ONLY traits they want them to |
|
|
Term
|
Definition
| members of each species compete regularly to obtain food, living space, and other necessities of life |
|
|
Term
|
Definition
| the ability of an individual to survive and reproduce in its specific environment |
|
|
Term
|
Definition
| any inherited characteristic that increases an organism's chance of survival |
|
|
Term
|
Definition
| process in which individuals with low levels of fitness either die or leave few offspring, while individuals with adaptations that enable fitness survive and reproduce |
|
|
Term
|
Definition
| the survival of the fittest: nature selects for organisms that are best fit |
|
|
Term
| descent with modification |
|
Definition
| each species descends, with changes, from other species over time |
|
|
Term
|
Definition
| principle that all species are derived from a common ancestor |
|
|
Term
|
Definition
| structures in organisms, such as forelimbs in mammals, that develope from the same embryonic tissue, but do not have the same functions |
|
|
Term
|
Definition
| shrunken homologous structures that no longer serve their original function but do not affect an organism's fitness, so therefore are not eliminated by natural selection |
|
|
Term
|
Definition
| the book in which Darwin published his work |
|
|
Term
|
Definition
| a scientist who wrote to Darwin about changes in plants and animals, summarizing the same ideas that Darwin had; this gave Darwin incentive to publish On the Origin of Species |
|
|
